Tagged: maize





The diversity and capacity of maize to adapt to a changing climate rests in the hands of farmers

The diversity of maize in the community of Yaxcabá, Yucatán, is shared among farmers. They select seeds that are most resistant to unfavourable climatic conditions and, by exchanging or selling them, they safeguard the diversity and resilience of maize.

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Auxin redistribution modifies maize root proliferation

We know that maize roots chase after phosphorus, but how? Xin Wang and colleagues have been investigating what purpose the hormone auxin has in controlling root proliferation. Their work could help better understand how plants work to capture phosphates in the soil. Plants require phosphorus to grow, and it’s essential for any crop. But it is often unevenly distributed in the soil as phosphates, and plants have to go foraging for it. Roots can take a lot of effort to build, so controlling when to create new roots is an important trait for plants. When a plant hits a phosphate-rich...

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Flavanols in action

Maize glycosyltransferase modifies flavonols and enhances stress tolerance

Flavonols are plant produced secondary metabolites and could exert health-promoting effects in humans. To become stable and functional molecules, flavonols are firstly biosynthesized and then modified, mostly by adding sugar donors via glycosylation. Flavonoid biosynthesis derives from the phenylalanine metabolic pathway and has been well characterized in Arabidopsis thaliana. Li et al. reveal that the maize (Zea mays) flavonol glycosyltransferse UFGT2 plays major roles in the flavonol modification, and could also help the plants to cope with abiotic stresses. It is a candidate gene for improving the grain quality and crop traits in stress tolerance. With the aggravation of environmental...

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Structure of a maize

In situ analyses of inorganic nutrient distribution in sweetcorn and maize kernels

Understanding the spatial distribution of inorganic nutrients within edible parts of plant products helps biofortification efforts to identify and focus on specific uptake pathways and storage mechanisms. Cheah et al. harvested kernels of sweetcorn (Zea mays) variety ‘High zeaxanthin 103146’ and maize inbred line ‘Thai Floury 2’ at two different maturity stages. They then examined, and the distributions of K, P, S, Ca, Zn, Fe and Mn in situ using synchrotron-based X-ray fluorescence microscopy. The distribution of inorganic nutrients was largely similar between maize and sweetcorn, but differed markedly depending upon the maturity stage after further embryonic development. The micronutrients...

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